Entrance guard system composition structure of fingerprint identification technology in

2023-09-29 00:00:00

fingerprint identification technology application is more and more in the entrance guard system, on the one hand is high safety coefficient of fingerprint recognition, need not carry other carrier, convenient and quick;On the other hand the breakthrough, thanks to the development of electronic technology and algorithm greatly improve the recognition rate, increased the practicality, cost reduction at the same time, the fingerprint identification technology has gained popularity.So, what is the structure principle of fingerprint identification system?

the fingerprint identification system on the market is very at present much, but its structure is large as the same, are made by matching fingerprint classification, fingerprint identification and fingerprint compression storage of the three parts, now let’s do a simple introduction.

a, fingerprint classification

the fingerprint collection and classification of fingerprint recognition system is the first link.We need to first by optical or COMS fingerprint acquisition machine for fingerprint acquisition, general is the use of two contrast methods, namely the first collection of fingerprints were compared with the second acquisition of fingerprint, corresponding to save information, added to the fingerprint database.Is unqualified, if the acquisition of fingerprint recognition devices will be issued a prompt, prompted to acquisition.This is in order to ensure the quality of fingerprint collection measures taken.

fingerprint acquisition and classification, the purpose of classification is to reduce the search space, the recognition speed, convenient to manage the large capacity of fingerprint.Analyzer, its principle is to use fingerprints for fingerprint acquisition in front of the formation of the array, according to the fingerprint ridge valley to classify, divided into the pointed arch, arch, left loop, right loop and vortex, and so on.

2, identify fingerprint matching

the fingerprint recognition system is the core of the algorithm, to say the algorithm largely determines the recognition rate and recognition speed.For example Biokey algorithm, this algorithm has the characteristics of rapid, accurate, and USES a one-to-one and a pair of N fingerprint recognition algorithm, it can be in 1 to 5 s to fingerprint identification of 2000 ~ 6000 fingerprints.

3, fingerprints of compression and storage

the fingerprint compression aims to save storage space, it is the requirement to the algorithm for fingerprint image is compressed, try to keep the fingerprint feature points information details, details to extract fingerprint characteristics after decompression precision has little effect.Common fingerprint image compression algorithms such as JPEG and WSQ and EZW, here is not to explain one by one.


well, a brief introduction about our fingerprint recognition system is to here, hope to help you.